Adverse race-related events as a risk factor for posttraumatic stress disorder in Asian American Vietnam veterans.

Few studies have explored the relationship between exposure to adverse race-related events and posttraumatic stress disorder (PTSD). This study examined whether adverse race-related events can give rise to symptoms that meet the criteria for a PTSD diagnosis as specified in the DSM-IV. Three hundred Asian American Vietnam veterans were administered a Mississippi Scale and a questionnaire that assessed exposure to adverse race-related events in the military and associated PTSD symptoms. A subsample was administered the Clinician-Administered PTSD Scale. A majority of the participants (77%) reported exposure to adverse race-related events. Depending on the number of events to which they were exposed, between 13% and 36% reported symptoms consistent with meeting full criteria for PTSD. Mississippi Scale scores increased significantly as a function of frequency of exposure to adverse race-related events. These results converge with the Clinician-Administered PTSD Scale findings to demonstrate that adverse race-related events can be traumatic and associated with PTSD. These findings support the construct and convergent validity of race-related PTSD.